. Diseases of the nervous system : for the general practitioner and student. the medulla they begin todecussate to go down in the cord (see Spinal Cord, Fig. 12). Immediatelybehind the pyramids lies the median fillet or lemniscus. This bundleof fibers originates in the nuclei of Goll and Burdach (see above). Aswe have seen above, the sensory neurones of Golls and Burdachs THE CENTRAL NERVOUS SYSTEM 17 columns of the spinal cord terminate in the lowest parts of the medullain two nuclei (gracilis or Goll and cuneatus or Burdach). The function,however, of these neurones is continued: new fibers o
. Diseases of the nervous system : for the general practitioner and student. the medulla they begin todecussate to go down in the cord (see Spinal Cord, Fig. 12). Immediatelybehind the pyramids lies the median fillet or lemniscus. This bundleof fibers originates in the nuclei of Goll and Burdach (see above). Aswe have seen above, the sensory neurones of Golls and Burdachs THE CENTRAL NERVOUS SYSTEM 17 columns of the spinal cord terminate in the lowest parts of the medullain two nuclei (gracilis or Goll and cuneatus or Burdach). The function,however, of these neurones is continued: new fibers originate in the cellsof these nuclei and ascend. They begin to decussate in the median line(raphe) with their fellows of the opposite side, immediately above thedecussation of the pyramids and form a large sensory bundle, calledmedian fillet (lemniscus). At the level of the pons the median filletspreads laterally on both sides; the lateral portions are called lateral GENU OF FACIAL NERVE NUCLEUS OF ABDUCENS ^ITilBUL^NERvI RETICULARFORMATION DESCENDING ROOT OF FACIAL NERVE. NUCLEUS OFFACIAL NERVE SPINAL TRACTOF TRIGEM-INUS ROOT OF VES-TIBULARNERVESUPERIOROLIVE ROOT OF ABDUCENS CONTINUATION OFPYRAMIDS Fig. 14.—Diagram of Transverse Section of Inferior Part of Pons. {Morris, after Schwalbe.)The restiform body, not included, occupies the curved space lateral to the nucleus of vestibular nerve. lemnisci. Posteriorly lies a third bundle, called posterior longitud-inal fasciculus, the function of which is to associate the nuclei of the cranial nerves (Figs. 13, 14). In addition to these three fasciculi there are a number of fibers runningvarious courses. Such are the internal arcuate fibers, some of whichconnect one restiform body (inferior cerebellar peduncle) with the olivarybody and the restiform body of the opposite side; others are destined forboth cerebellum and cerebrum. The Olives are isolated masses of gray substance containing a densemass of fibers. Between them and the py
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectnervous, bookyear1913
